/*******************************************************************************
*                                                                              *
* Copyright 2010 Rheinmetall Canada Inc.                                  	   *
*                                                                              *
* No part of this document may be reproduced, stored in                        *
* a retrieval system, or transmitted, in any form or by any means,             *
* electronic, mechanical, photocopying, recording, or otherwise,               *
* without the prior written permission of Rheinmetall Canada Inc.              *
*                                                                              *
*******************************************************************************/
/*
	Description:
	This is a template file for standard C header file.

*/

/* ************************************************************************** */
/* ¤Revision:
000 20100616 JFM,
	Original version.

### YYYYMMDD Initial, Bug Identification
	Change description.
 */

#ifndef UART_H
#define UART_H

/* ************************************************************************** */
/* Defines */
#define UART_MAX_RX_BUFF_SIZE	512
#define UART_MAX_TX_BUFF_SIZE	1024

/* ************************************************************************** */
/* Type definitions */
//Handles to the Uart ports as mapped physically on the CU board.
//in comment is the physical port assigned to each handle
//
enum eUartHandles
{
	UART_1,		//(232)	internet Uart 2 - Lora IF
	UART_2,		//(232)	internal Uart 5 - SIM7080G LTE IF
	//UART_3,		// !!!EXTERNAL!!! SPI daughter board...
	MAX_UART_HANDLE,
	
	INVALID_UART_HANDLE = 0xFF
};

extern const char *gUartStrings[MAX_UART_HANDLE];

enum eUartStopBits
{
	UART_ONE_STOP_BIT,
	UART_ONE_HALF_STOP_BIT,
	UART_TWO_STOP_BITS
};
enum eUartParity
{
	UART_NO_PARITY,
	UART_EVEN_PARITY,
	UART_ODD_PARTIY
};	

typedef struct
{
	int iIsInternal;
	int iPhysicalUartPort;
	int iDataPending;		//This flag is 0 when : TxPtr == RxPtr OR Uart is transmitting.
	
	char acTxCircularBuffer[UART_MAX_TX_BUFF_SIZE];
	char *pcTxInPtr;
	char *pcTxOutPtr;	
	char acRxCircularBuffer[UART_MAX_RX_BUFF_SIZE];
	char *pcRxInDataPtr;
	char *pcRxOutDataPtr;
	int iNbRxFIFOPendingBytes;
	
	
}stUartData;

enum eUartReturnValues
{
	UART_OK = 1,
	UART_PORT_BUSY,
	UART_PORT_NOT_OPENED,
	UART_BUFFER_FULL,
	UART_INVALID_HANDLE,
	UART_INVALID_PORT
};

/* ************************************************************************** */
/* Prototypes */
int UartTransmitData(int p_iUartHandle, char *p_pcBuffer, int p_iSize);
int UartReceiveData(int p_iUartHandle, char *p_pcBuffer, int p_iSize);
int DataSentNotification(int p_iUartHandle,int p_iDataSize);
void InitUart(void);
int UartOpenComPort(int p_iUartHandle, int p_iBaudRate, int p_iNbStopBits, int p_iParityEnable);
int UartTick(void);
void UartBlockAndTick(unsigned int TickCount);
int UartBlockUntillBufEmpty(int iUartHandle);
int UartGetPendingDataSize(int iUartHandle);
int UartResetPort(int p_iUartHandle);

#endif
//EOF